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| author | Thomas Gleixner <tglx@linutronix.de> | 2020-11-04 18:14:52 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-11-04 18:14:52 +0100 |
| commit | 01be83eea08d6d9f9209843e2e084505fba4053f (patch) | |
| tree | 95b456e1ac40399fd5f55b57ae0936643bea1836 /include/net/checksum.h | |
| parent | 45ff510517f3b1354a3d9c273ad5e5e8d08312cb (diff) | |
| parent | 9d820f68b2bdba5b2e7bf135123c3f57c5051d05 (diff) | |
| download | linux-01be83eea08d6d9f9209843e2e084505fba4053f.tar.bz2 | |
Merge branch 'core/urgent' into core/entry
Pick up the entry fix before further modifications.
Diffstat (limited to 'include/net/checksum.h')
| -rw-r--r-- | include/net/checksum.h | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/include/net/checksum.h b/include/net/checksum.h index 46754ba9d7b7..0d05b9e8690b 100644 --- a/include/net/checksum.h +++ b/include/net/checksum.h @@ -24,26 +24,32 @@ #ifndef _HAVE_ARCH_COPY_AND_CSUM_FROM_USER static inline __wsum csum_and_copy_from_user (const void __user *src, void *dst, - int len, __wsum sum, int *err_ptr) + int len) { if (copy_from_user(dst, src, len)) - *err_ptr = -EFAULT; - return csum_partial(dst, len, sum); + return 0; + return csum_partial(dst, len, ~0U); } #endif #ifndef HAVE_CSUM_COPY_USER static __inline__ __wsum csum_and_copy_to_user -(const void *src, void __user *dst, int len, __wsum sum, int *err_ptr) +(const void *src, void __user *dst, int len) { - sum = csum_partial(src, len, sum); + __wsum sum = csum_partial(src, len, ~0U); if (copy_to_user(dst, src, len) == 0) return sum; - if (len) - *err_ptr = -EFAULT; + return 0; +} +#endif - return (__force __wsum)-1; /* invalid checksum */ +#ifndef _HAVE_ARCH_CSUM_AND_COPY +static inline __wsum +csum_partial_copy_nocheck(const void *src, void *dst, int len) +{ + memcpy(dst, src, len); + return csum_partial(dst, len, 0); } #endif |